Message

X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from mail06.syd.optusnet.com.au ([211.29.132.187] verified) by logan.com (CommuniGate Pro SMTP 5.0c2) with ESMTPS id 728130 for flyrotary@lancaironline.net; Tue, 20 Sep 2005 16:59:29 -0400 Received-SPF: none receiver=logan.com; client-ip=211.29.132.187; envelope-from=lendich@optusnet.com.au Received: from george (d58-104-138-74.dsl.nsw.optusnet.com.au [58.104.138.74]) by mail06.syd.optusnet.com.au (8.12.11/8.12.11) with SMTP id j8KKwegT013323 for ; Wed, 21 Sep 2005 06:58:41 +1000 Message-ID: <000f01c5be26$68d59670$4a8a683a@george> From: "George Lendich" To: "Rotary motors in aircraft" References: Subject: Re: [FlyRotary] Re: Injectors Date: Wed, 21 Sep 2005 07:01:01 +1000 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_000C_01C5BE7A.39F9B1C0" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2800.1106 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1106 This is a multi-part message in MIME format. ------=_NextPart_000_000C_01C5BE7A.39F9B1C0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Message Rusty,=20 Thanks for the response. I took YOUR advise and used a smaller primary ( it was either yours or = Tracy's - or both) and opted for that smaller primary for the reason you = gave on idle. If your not wanting anymore than 121 hp for the single 2x 2018's will = more than do the job. I figure your not P-porting and not running the RX8 (10:1) rotor, so = your aiming for more like 100hp for the single. George (down under)=20 I have identified the local supplier and MSD are indeed cost = effective. I have selected a 38lb (2018) primary and a 50 lb ( 2013) secondary = for the single. It may be wishful thinking but I don't want to run lean at 7,500 rpm. = The 2x 400 cc ( 38lb) runs out of puff at 121hp and I'm hoping for a tad = more than that with the PP and RX8 rotor. In the end it may only be = 125hp but the combination will reach 140hp within the 80 % duty cycle so = I figure I'm safe from running lean. Question is how come these are cheaper than the mazda and other known = brand injectors - I expected them to cost more.=20 George ( down under)=20 Hi George, You've chosen well. I've used those exact two injectors types in the = RV-3. The current config is 4- 38 lb/hr injectors, which idle better, = and still have plenty of fuel capacity for full power. The 50 lb/hr = injectors worked just fine as well, though they didn't idle as well. = I'll probably use two of the 50 lb/hr injectors in the single rotor, = since I have them available, and I won't be trying to get a low idle. =20 As for the price difference, I just assumed that anything sold through = a carmakers parts dept will be way more expensive than it should be. = I'm sure the MSD injectors are used in some cars as well, and if you = could figure out which ones they are, I'd bet their parts dept has a = much higher price on these. =20 Also note that the electrical connectors are readily available, and = cheap. That was one of my other gripes about using the Mazda injectors. = In some cases, it's impossible to get a new connector, so you're = dealing with junkyard parts. Cheers, Rusty (just bought yet another Kolb Slingshot project, breeding like = rabbits) ------=_NextPart_000_000C_01C5BE7A.39F9B1C0 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Message

Rusty,

Thanks for the response.

I took YOUR=20 advise and used a smaller primary ( it was either yours or Tracy's - or both) and opted for that = smaller=20 primary for the reason you gave on idle.

If your not wanting anymore than 121 hp = for the=20 single 2x 2018's will more than do the job.

I figure your not P-porting and not = running the RX8=20 (10:1) rotor, so your aiming for more like 100hp for the = single.

George (down under)

I have identified the local supplier = and MSD=20 are indeed cost effective.

I have selected a 38lb (2018) = primary and a=20 50 lb ( 2013) secondary for the single.

It may be wishful thinking but I = don't want to=20 run lean at 7,500 rpm. The 2x 400 cc ( 38lb) runs out of puff at 121hp = and I'm=20 hoping for a tad more than that with the PP and RX8 rotor. In the end = it may=20 only be 125hp but the combination will reach 140hp within the 80 % = duty cycle=20 so I figure I'm safe from running lean.

Question=20 is how come these are cheaper than the mazda and = other=20 known brand injectors - I expected them to cost = more.

George ( down under)

Hi George,

You've chosen well. I've used those = exact two=20 injectors types in the RV-3. The current config is 4- 38 lb/hr=20 injectors, which idle better, and still have plenty of = fuel capacity for=20 full power. The 50 lb/hr injectors worked just fine as well, = though they=20 didn't idle as well.  I'll probably use two of the 50 lb/hr=20 injectors in the single rotor, since I have them available, and I = won't be=20 trying to get a low = idle.

As for the price difference, I just assumed = that=20 anything sold through a carmakers parts dept will be way more = expensive=20 than it should be. I'm sure the MSD injectors are used in some = cars as=20 well, and if you could figure out which ones they are, I'd bet their = parts=20 dept has a much higher price on=20 these.

Also note that the electrical connectors are = readily=20 available, and cheap. That was one of my other gripes about = using the=20 Mazda injectors. In some cases, it's impossible to get a new=20 connector, so you're dealing with junkyard=20 parts.

Cheers,

Rusty (just bought yet another Kolb Slingshot = project,=20 breeding like rabbits)


------=_NextPart_000_000C_01C5BE7A.39F9B1C0--